Home / 155,979.40-215,278.04-88,015.65

Finding the Fourth Proportional to 155,979.40, 215,278.04 and 88,015.65

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Solution

The fourth proportional to 155,979.40, 215,278.04 and 88,015.65 is: 121,476.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,979.40 : 215,278.04 = 88,015.65 : x
  2. Step 2: Convert to fraction form
    155,979.40/215,278.04 = 88,015.65/x
  3. Step 3: Cross multiply
    155,979.40x = 215,278.04 × 88,015.65
  4. Step 4: Simplify right side
    155,979.40x = 18,947,835,544.94
  5. Step 5: Solve for x
    x = 18,947,835,544.94/155,979.40
  6. Step 6: Final answer
    x = 121,476.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.